Anchoring: General information:
When choosing the type of anchoring you have to attend several criterions:
- definition of the diameter of the anchor bar regarding the existing traction load
- definition of the anchor type according to the space possibilities in the foundation or in the base plate.
With the help of the following technical descripitons you find the fitting solution for each anchoring situation.
At straight tie rods the anchor nut is used. The anchoring ot the traction loads results in the big plate, which is screwed on to the lower end of the tie rod.
This anchor type can be cut out of the normal tie bars to the according length. The length depends on the traction load, the diameter of the tie rod and the actual strength of the concrete.
In praxis the following empirical values have been approved:
Ø 15.0 mm - length of tie rod 500 mm
Ø 20.0 mm - length of tie rod 700 mm
Ø 26.5 mm - lenth of tie rod 1000 mm
The subsequent installation through the upper reinforcement layer is possible without problem. A further advantage which can only be used with this system is the possibility to recover the tie rod after using. For that you only have to install a plastic tube between anchoring nut and the installation help (V-holder and anchor holder L).
The anchoring in the concrete results in the profiling of the corrugated tie bar. An additional anchor plate or anchor nut is not necessary. The subsequent installation through the upper reinforcement layer is possible without problem.
The anchoring in the concrete results in the profiling of the bent anchoring bar.
An additional anchor plate or anchor nut is not necessary. Only with the short version of the hook anchor Ø 15.0 mm for thin base plates we recommend the addition of a transverse bar into the bent loop on the part of the builder.
The subsequent installation through the upper reinforcement layer is possible by mounting of the hook.
It is optimum usable, if the thickness of the base plates is in the correct relation to the length of the inclined ends of the tie rods: the installation is done by placing on and racking of the bent loop on the lower reinforcement layer. In one working step 2 anchoring bars are installed without further accessories.